10202212220509 has 2 divisors, whose sum is σ = 10202212220510. Its totient is φ = 10202212220508.

The previous prime is 10202212220471. The next prime is 10202212220521. The reversal of 10202212220509 is 90502221220201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8417089093284 + 1785123127225 = 2901222^2 + 1336085^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202212220509 - 2⁷ = 10202212220381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202212220539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101106110254 + 5101106110255.

It is an arithmetic number, because the mean of its divisors is an integer number (5101106110255).

Almost surely, 2^{10202212220509} is an apocalyptic number.

It is an amenable number.

10202212220509 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202212220509 is an equidigital number, since it uses as much as digits as its factorization.

10202212220509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 10202212220509 in words is "ten trillion, two hundred two billion, two hundred twelve million, two hundred twenty thousand, five hundred nine".